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The study found that males with androgenetic alopecia had a significantly lower left-hand 2D:4D digit ratio compared to healthy controls, suggesting this ratio may help estimate future AGA risk.

This study found that among vitiligo patients in south-southern Nigeria, there were significant correlations between digit lengths and digit ratio, but further research is needed due to the small sample size.

This study found that in male patients, a lower right-handed 2D:4D digit ratio combined with older age correlated with increased severity risk of androgenetic alopecia.

This study concluded that the digit-length ratio (2D:4D) does not predict androgenic alopecia development, suggesting prenatal androgen exposure does not predispose men to this condition.

This article discusses the connection between prenatal androgen exposure, marked by the second-to-fourth digit ratio, and seborrheic dermatitis, but reports no new experimental findings.

This study found that while prolactin and DHEA-S levels were higher in women with hirsutism compared to controls, there was no significant correlation between second to fourth digit ratio and hormonal profiles.

This study reports that a lower 2D:4D finger length ratio is significantly associated with higher disease activity and reduced spinal mobility in females with ankylosing spondylitis, but not in males.

In this study, researchers found that the congenital absence of the palmaris longus muscle was relatively uncommon and showed no significant differences according to sex, side, or digit ratio (2D:4D) among individuals assessed using MRI and radiographs.

In this review, the authors evaluated the potential of using the second to fourth digit ratio (2D:4D) as a predictor for androgenetic alopecia, suggesting future research directions but not reporting definitive results.

In this study, a significant negative correlation was observed between the 2D:4D digit ratio and maxillary sinus volume in men, suggesting an androgenic hormone influence on sinus volume development.

This research suggests that the digit ratio, 2D:4D, is unlikely to be a significant indicator of male androgenetic alopecia, contradicting a prominent isolated finding from a previous study.

This study found that women with lower 2D:4D ratios and fewer middle-phalangeal hairs reported more adverse side effects from oral contraceptives, suggesting these features may predict hormonal contraceptive side effects.

This study found no significant difference in 2D:4D ratios and autism questionnaire scores between acne vulgaris patients and healthy controls, despite investigating potential links in this novel context.

This study found that women with PCOS had significant hormonal imbalances, increased central obesity, and a lower 2D:4D digit ratio, suggesting prenatal androgen exposure may play a role in the condition's development.

This study found that males with androgenetic alopecia had a significantly lower 2D:4D digit length ratio in the right hand compared to healthy controls, which may indicate prenatal androgen exposure.

This study found that self-reported androgen-driven phenotypes, like balding and finger length ratios, were not associated with cancer aggressiveness or biochemical recurrence in prostate cancer after prostatectomy.

Finger length ratios are not linked to the number of specific gene repeats affecting testosterone sensitivity.

In this study, researchers found that the glabrous skin of the rat forelimb contains sparse Meissner corpuscles and Merkel complexes, with more slowly adapting afferents in the palm and rapidly adapting afferents in the digit extremity.

The researchers reported that the petroleum ether extract of Cuscuta reflexa may promote hair growth in testosterone-induced alopecia in mice by inhibiting the enzyme 5α-reductase.

This study found that petroleum ether extracts of Citrullus colocynthis reduced hair growth initiation time and advanced more hair follicles to the anagen phase in albino rats compared to untreated controls and minoxidil.

This study found that Cuscuta reflexa extracts promoted hair regrowth and follicular proliferation in cyclophosphamide-induced hair loss in male rats.

In this study, petroleum ether extracts of Phyllanthus niruri promoted hair regrowth in testosterone-induced alopecia in rats by inhibiting the 5α-reductase enzyme.

This study found that ethanolic and petroleum ether extracts of Cuscuta reflexa, as well as an isolate from these extracts, improved hair growth and follicle characteristics in androgen-induced alopecia in rats.

This study demonstrates that an AI-based grading framework using a novel area ratio metric improves the accuracy and consistency of male pattern hair loss classification, especially in advanced grades, compared to traditional methods.

This paper discusses the need for a standardized classification and meta-analysis of treatments for hypopigmented disorders and reports no new clinical results.

In this study, researchers found that males with alopecia areata had a significantly lower 2D to 4D finger length ratio compared to healthy controls, suggesting this ratio might predict alopecia areata development, though it did not correlate with disease severity.

This study found that topical adenosine significantly increased the ratio of thick hairs and contributed to global improvement in Japanese men with androgenetic alopecia compared to niacinamide, with no observed adverse events.

In this study, Flii overexpression in mice enhanced fingertip regeneration and nail formation after both distal and proximal amputations, suggesting a role in digit and hair follicle regeneration possibly involving Wnt signaling.

This study found that Avicennia marina extract significantly inhibited 5α-reductase type 1 activity in human hair dermal papilla cells, suggesting its potential use for treating androgenic alopecia.

This study found that low ferritin levels are associated with higher telogen ratios in women with diffuse hair loss, suggesting an important role of ferritin in telogen effluvium diagnosis.